Home / 39,418.24-59,128-13,122.56

Finding the Fourth Proportional to 39,418.24, 59,128 and 13,122.56

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Solution

The fourth proportional to 39,418.24, 59,128 and 13,122.56 is: 19,684.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,418.24 : 59,128 = 13,122.56 : x
  2. Step 2: Convert to fraction form
    39,418.24/59,128 = 13,122.56/x
  3. Step 3: Cross multiply
    39,418.24x = 59,128 × 13,122.56
  4. Step 4: Simplify right side
    39,418.24x = 775,910,727.68
  5. Step 5: Solve for x
    x = 775,910,727.68/39,418.24
  6. Step 6: Final answer
    x = 19,684.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.